Driving mechanism



S. R. HOWARD DRIVING MECHANISM Filed Jan Ap l0, 1928.

. 5. 1927 2 Sheets-Sheetjl April-1o, 192s. 1,665,463

S. R. HOWARD DRIVING MECHANISM l Filed Jan. 5. 1927 2 Sheets-Sheet 2 Patented Apr. 10, 19.28.

UNITED VsTA'l'Es PATENT OFFICE.

STANLEY R. HOWARD, OF EAST MILTON, MASSACHUSETTS,l ASSIGNOR TO '.PNEUMATIC SCALE CORPORATION, LIMITED, 0F QUINCY, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS.

' DRIVING MECHANISM.

Application led January 5, 1927. Serial No. 159,099.

4This invention relates to a driving mechanism for a rotary member.

The invention has for an object to provide a novel and improved mechanism for driving a rotary member, which is particularly adapted for use in driving the rotary spider of the wrapping machine of my copending application Serial No. 159,100, filed January 5, 1927, but which in addition may be used with advantage in other machines whose operation involves an intermittent revolution of an element combined with an independent rotation ofthe element.

With this object in view and such others as may hereinafter appear, the invention consists in the driving mechanism, and in the combinations hereinafter described and particularlyl defined in the claims at the end of this specification.

The drawings illustrate the invention as embodied in a driving mechanism for causing the spider of a box banding machine to be intermittently revolved and successive of the box holding blocks to be rotated at the banding station, and wherein Figure 1 is a front elevation of a driving mechanism embodying the present invention; Fig. 2 is a detail in section through the spider; and Fig. 3 is a vertical longitudinal section through the same.

Referring to the drawings, dierent features of the present driving mechanism are, as above stated, shown as embodied in mechanism for driving the spider of a box banding machine, and the latter comprises kthe machine forming the subject matter of my copending application. A sufcient portion of such box banding machine has been herein shown to illustrate the present driving .mechanism, and briefly such machine'is provided .with a rotatable spider provided at its forward end with -four blocks spaced degrees apart upon which the boxes are carried during the banding operation. Pro- Yvision is made for intermittently rotating the spider, step by step, 90 degrees at a time, so as to present each of these blocks successively to a receiving station, where a box to be banded is placed upon the spider, then to a banding station where a strip of banding paper previously coated with an adhesive is wrapped completely about the sides and ends of the box so that it` overh'angs the top and bottom edges of the same, then to a folding station where these overhanging portions are folded over upon the bottom of the box and over the top edges thereof and then to ak pressing and delivery station at which the previously banded box, upon its' block, is pushed through a set of yielding presser rolls which act to more firmly `fix the wrapper to the box. The box is delivered onto a table or shelf, being retained The vpresent driving mechanism functions to impart the intermittent revolution to the spider and the independent rotation of the successive blocks at the banding station. The spider, herein shown at 12, is pivotally mounted on the forward end of aY shaft 14 which is journalled at 16 andv 18 in bearings secured to the frame of the machine, and has rotatably and slidably mounted at intervals of 90 degrees on its periphery the shafts 20, 22,124 and 26 which carry on their forward ends theiblocks 28, 30, 32 and 34, respectively. i

In thesev lfigures the block 28 is shown at the box receiving station ofthe banding machine, 30 at the banding` station, 32 at the' folding station, and 34 atthe pressing and delivery station.

For the purpose of intermittently rotating the spider to move each of these blocks successively through each of these stations, an arm 36 is secured to the rear end of the shaft 14. This arm is connected` by a linlr 38 to the outer end of a crank arm 40 pivotedat 42 tothe frame of the machine. Thecrank arm 40 is rocked by a block 44 pivotally mountedon a crank pin 46 secured to al gear 48. The length of the link 38 kis adjustable l, and also the effective length of the arm `36, --and these lengths may be adjusted so as to and 2) each time theshaft 14 is vrocked iny that direction, aV latch arm `5011s secured to "the shaft 14 within the spider 12 with its hub adjacent that` of the spider. This latch arm has a'radially disposed latch 52 mounted in a slide therein which is'urged out-rv V@tieno'f the latch arm 450.' `In. the illustrated" arm 50 to be returned independently di'v 'the 1- spider when counter-clockwise. rotatiQn of the shaft 1/1 takes place,` provision is made for disengaging the latch ,52 from the particularslot .56 in which it was received` during A the 4preceding forward part of oscillation-of lthe shaft Hand thesp'ider, and in `addition rovision is alsopreferably made ffor lock- .fing `the spider inthe position into `which it ljhaslibeen advanced-by the',forwardv oscilla- .machinmasshownin detailin Fig. 2, a radi- ,ally, movableflocl 58, located externallyrof fthe .spideig isfarranged to be "inserted by mechanism to-be described, into theparticular slot 56 with which the latch 52de engaged during the forward :movement et theQlatch arm50, disengaging the latch 5,2 rornthe spider `and?per mitting the latch arm 50 to be flee to rotate in-aeounter-"clockwvise direction Withthehshaftl 'At the same time, the loclciserves to prevent-return Inovel .nflent of the `spider in a counter-.clockwise direction. DuringA the counter-clockwise -rotation o'fthe "latch arm 50, a roll 60fjourtnalled"in theoiiter end ofthe latch `52 rides upon theinnercylindrical surface 62 ofthe spideruntilthe latch atJthe end of this movement cemesintotalinement with anotherof the slots 56 and is forced into ithy the rspringathe parts then being again in the position shown inFigs. 1 and. InJorder that tl1.lock 58 `may be inserted .at the properV timeinto .one ofthe slots inthe `spider-112 to lock the latteragainst counterclockwise (rotation `and "later Withdrawn at the propertime to permit vclockwise rotation of the spider, the lock 58 ismountedin slideavays "(-lforined in aybraclet4 `66 secured 'to `the frame of the machine andwiscmoved `therein.by `mea-ns ofpanarmS secured to .a roc'kshaft 70 jcurdalled in the bracket 66 `.i1-nd another z'ied bracket "f2 and-connected tothelock` 58 by a pivoted bloclY/t. The

Y0 is.` rocked .byan arm 76 securedto` itsjrear end and connected byja link 7Std theouter end .Qt acam arm Tmounted (in la stud 82 .securedlto a bracket Sisecured "to the frameiofthe machine. 'The cam' arm carries `a `cam roll 8,6 ,which ceoperates .with .a suitably .shaped-cam. grOove in" afnam v88 secured to ifi-a .constantly rotating shat'fQmO `to Aimpart the desired a timed `movement Cto y,the .lock t 58 `through the `connectims dei '-3 i. t i

t ffInQthe banding `machine in which the present invention isfSlloWn Yas embodied a set A up `box to 'be banded' is placed upon the particuablyxmcunted onalixed l tric with respect to the shaftfllfandfformed' on the forward endl of gaf conical `shell 1112 lar block at the receiving station, andthere- `after tl'hefbloclnWit-h thebox `thereon is .ad-

vanced in the manner and by the mechanism t Ais' thus revolved provision is made bymechanism not shown for holding an adhesive banding ,strip-.against the lateral surface of the fbox` thereon to thereby "Wrap the" fba nd `ing striparound` `the bei;

EThe fmechanism fcrselectively .rotating each of the blocks 28,` 3032a1ld 34,:1after ithas arrived .at the bandingstation order vt-hat the Wrapper rmay` be wrapped..about` the boxumay be described 'in detail as ffo'llcwsz.

The shafts 207 22, Q Land126uponwhich the blocks4 are mounted'` havesplinedfto them sleeves-92, 94; 96 and 9.8,;"r`espectively, having formed on their rear gen'fds gears 10(1),{1102` `104`an`d 10G. A segmental gear`10`8 which meshes with these gearsf 1'00,1102, "1045 y,and 106, While at the banding station, rotat- (see Fig. L3) secured to thelframe. l

`The shell; 112` also` carries the bearing'lt fier the shaft .14. The segmentalgear-lS has secured to ,theouter portion of Sits :front facen a` bracket C 113 `which carries .a roll 1111 which engagesthe sides'oi a radialslot11-5 formed inthe periphery theflatchjarm 50,

r `thus connecting ltlie latch Varm `50 `and 'the segmental rgear 108 insuch amannenthat when thelatch arm is rotated 90fdegrees fin either direction With the rock shaft x14 .the segment 1108 isgrotated slightly .more'than 90 Adegrees inthe same' direction upon `its eccentric bearingflljl). It may be seen Hfrom an inspection of Figs. 1 and 2 that the eccentricity of the bearing .110 Witl'nrespectte 4the 'shaft Ms in suchsa.directicnjasxto canse theteeth of .thesegmentlOSnto `mesh Wlith and segment 108' will` -be moved ffronr the positionshown Vin Fig. l` to that shown/in ceiving station `to the banding rstationyand `thelteeth ofits gearflOO, willbe gradually "brought into mesh withthose of Vthesegment "108 andy will loew-holly in mesh when aring 110, ecceni any? one of Athe* gears 100, .102m7 l0-l or 106 located at the banding station and:prevents` engagement `W'ithany of them at .any 'of the .other three stations,ffDnninglthe clockwise rotation of the'spider" 12,:t`he latch arm 150 the parts reach the position shown in Fig. 2. During this movement neither of thel gears 100 and 102 are rotated about their own axes 20 and 22. Vhen, however, the latch arm and segment 108 rotate in a counter-clockwise direction and the spider is prevented from such rotation by the lock 58, the engagement of the teeth of the segment with those of the gear 100 will cause the latter and the block 28 to be rotated in a clockwise direction. The pitch radii of the segment 108 and gear 100 are preferably so proportioned that this rotation of slightly more than 90 degrees of the segment will rotate the gear and block exactly one revolution as is desired.

In order that the blocks 28, 30, 32 and 84 may be prevented from rotating at all times excepting while at the banding station, as above described, the gears 100, 102, 104 and 106 have secured to them shoes 116, 118, 120 and 122 arranged to ride upon the periphery of a circular disk 124- secured to a flange 126 formed on the shell 112, the shoes having concave faces 128 closely litting this periphery. A recess 130 is formed in the disk 124 opposite the banding station of a size sufficient to permit the shoes 116, 118, 120 and 122 to rotate within the same.

While the present driving mechanism has been illustrated and described as embodied in mechanism for intermittently revolving the spider of a box banding machine, and for imparting independent rotation of thek boxholding block while at the banding station, it is to be understood that the different features of the invention may be embodied in other machines within the scope of the following claims.

Having thus described the invention, what is claimed is 1. The combination with a supporting member, having an article holding device rotatably mounted therein, of mechanism for intermittently revolving the supporting member and for rotating the article holding device, including an oscillatory element, connections between the oscillatory element and supporting member, and connection between the oscillatory element and the article holding device.

2. The combination with a supporting member, having an article holding device rotatably mounted therein, of a rotary actuating element, connections between said rotary element and the supporting member for intermittently revolving the latter, and connections between said rotary element and the articles holding device for rotating the article holding device with relation to the supporting member.

3. The combination with a supporting member, having an article holding device rotatably mounted therein, of a rotary actuating element, connections between said the article holding device for rotating the article holding device with relation to thesupporting member, and means for preventing revolution of said supporting member when the article holding device is rotated.

4. The combination with a supporting member, having an article holding device rotatably mounted therein, of mechanism for Iintermittently revolving the supporting member, and .for rotating the article holding device, including an oscillating element, and means having provision whereby the supporting member .is advanced when said element oscillates in one direction, and the article holding deviceis rotated when said element oscillates in the reverse direction.

5. The combination with a supporting member provided with a plurality of article holding devices rotatably mounted therein and each provided with a gear, means for intermittently revolving said supporting member through a plurality of stations, and means for rotating successive of the article holding devices with relation to the supporting member while at a particular station, including an operating gear normally disengaged rom said gears of the article holding devices, means for causing the operating gear to mesh with a particular oneof the article holding device gears during 'movement of the latter into a particular stat-ion, and for permitting said gear to be rotated by said operating gear during the return oscillation of the latter.

6. The combination with a supporting member having a plurality of article holding devices rotatably mounted therein, and each provided with a gear, of means for intermittently vrevolving said supporting member, including an oscillatory latch arm, a latch mounted thereon and adapted to cooperate with said supporting member, means for controlling the operation of the latch whereby the supporting member is advanced when the latch arm advances and is prey vented from movement during the return oscillation of said latch arm, and means for rotating an article holdingdevice gear with relation to said supporting member, including an operating gear connected to move with said latch arm, means for causing the operating gear to mesh with the article holding device gear without causing rotation of the latter during the revolution of the article holding deviceand supporting member into a particular station whereby said gear may be rotated by said operating gear during the return oscillation of said latch arm. v

In testimony whereof I have signed' my name to this specification. 

